Heat resilience of intraspecific outbred compared to inbred lineages in the kelp Laminaria digitata: gametogenesis, thermal tolerance and growth


In a mechanistic investigation of heat stress, heterosis (hybrid vigour), and underlying gene expression patterns, we assessed the thermal performance of inbred (selfings) and outbred (reciprocal crosses) sporophytes of the N-Atlantic kelp Laminaria digitata among clonal isolates from two divergent populations; one from the temperate North Sea (Helgoland) and one from the Arctic (Spitsbergen). First, we investigated the upper thermal tolerance of microscopic sporophytes in a 14-day experiment applying sublethal to lethal 20–23°C. We then subjected 4–7 cm long sporophytes to a control temperature (10°C), moderate (19°C) and sublethal to lethal heat stress (20.5°C) for 18 days to assess the physiological parameters growth and optimum quantum yield.

DOI https://doi.org/10.1594/PANGAEA.940559
Related Identifier https://doi.org/10.3389/fmars.2022.838793
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.940559
Creator Liesner, Daniel; Pearson, Gareth; Bartsch, Inka; Rana, Shivani; Harms, Lars; Heinrich, Sandra; Bischof, Kai; Glöckner, Gernot; Valentin, Klaus
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2022
Funding Reference German Science Foundation, 318182282; German Science Foundation, VA105 25 1
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Language English
Resource Type Dataset
Format application/zip
Size 13.6 kBytes
Discipline Earth System Research
Spatial Coverage (7.892W, 54.178S, 12.026E, 78.992N)
Temporal Coverage Begin 2015-06-10T00:00:00Z
Temporal Coverage End 2015-09-11T00:00:00Z